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    CVE-2026-5026

    The '/api/v1/files/images/{flow_id}/{file_name}' endpoint serves SVG files with the 'image/svg+xml' content type without sanitizing their content. Since SVG files can contain embedded JavaScript, an attacker can upload a malicious SVG that executes arbitrary JavaScript when viewed by other users, leading to stored cross-site scripting (XSS). This allows stealing authentication tokens stored in cookies, including JWT access and refresh tokens.

    Published:Mar 27, 2026
    Last Modified:Apr 20, 2026
    EPS:Mar 27, 2026
    EPSS Score:0.00072
    CVSS Score:5.4

    Affected Products

    Vendor
    Langflow
    Product
    Langflow

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-17622 (CVSS 6.5) — IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote authenticated attacker to obtain sensitive informat…
    CVE-2026-17631 (CVSS 5) — IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote authenticated attacker to obtain sensitive informat…
    CVE-2026-19298 (CVSS 8.8) — IBM Langflow OSS 1.0.0 through 1.11.2 could allow a remote authenticated attacker to execute arbitrary code du…
    CVE-2026-19301 (CVSS 5) — IBM Langflow OSS 1.0.0 through 1.11.2 could allow a remote authenticated attacker to obtain sensitive informat…
    CVE-2026-19303 (CVSS 8.1) — IBM Langflow OSS 1.0.0 through 1.11.2 could allow a remote authenticated attacker to delete arbitrary local fi…
    CVE-2026-19300 (CVSS 7.5) — IBM Langflow OSS 1.0.0 through 1.11.2 could allow a remote attacker to obtain sensitive information due to inc…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High